: A specialized AR feature where users can trigger a visual "soul transformation" into a purple snake/dragon hybrid, mirroring the iconic moments from Battle Through the Heavens Behind-the-Scenes "Vertical" Vlog
While "Cailin Batua" is not a mainstream legend like the Banshee or the Selkie, it appears in localized oral traditions, particularly in the coastal regions of Connemara (Ireland) and the Outer Hebrides (Scotland).
Originally an antagonist to the protagonist Xiao Yan, she later becomes one of his most loyal and powerful allies (and eventually his wife).